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Note J - Segment Information (Details Textual) - USD ($) |  | 3 Months Ended
--- | --- | ---
Jun. 22, 2021 | Jun. 30, 2021 | Jun. 30, 2020
Gain (Loss) on Extinguishment of Debt, Total |  | $ 1,706,614 | $ (0)
Nonoperating Income (Expense) [Member] | Hot-rolled Coil Steel Contracts [Member] |  |  |
Derivative Instruments Not Designated as Hedging Instruments, Loss |  | 1,388,960 |
Paycheck Protection Program CARES Act [Member] |  |  |
Gain (Loss) on Extinguishment of Debt, Total | $ 1,706,614 | $ 1,706,614 |

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